Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) # SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) # include/asm-generic contains a lot of files that are used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) # verbatim by several architectures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) # This Makefile reads the file arch/$(SRCARCH)/include/(uapi/)/asm/Kbuild
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) # and for each file listed in this file with generic-y creates
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) # a small wrapper file in arch/$(SRCARCH)/include/generated/(uapi/)/asm.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) PHONY := all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) all:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) src := $(subst /generated,,$(obj))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) -include $(src)/Kbuild
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) # $(generic)/Kbuild lists mandatory-y. Exclude um since it is a special case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) ifneq ($(SRCARCH),um)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) include $(generic)/Kbuild
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) include scripts/Kbuild.include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) redundant += $(foreach f, $(generic-y), $(if $(wildcard $(srctree)/$(src)/$(f)),$(f)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) redundant := $(sort $(redundant))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) $(if $(redundant),\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	$(warning redundant generic-y found in $(src)/Kbuild: $(redundant)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) # If arch does not implement mandatory headers, fallback to asm-generic ones.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) mandatory-y := $(filter-out $(generated-y), $(mandatory-y))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) generic-y   += $(foreach f, $(mandatory-y), $(if $(wildcard $(srctree)/$(src)/$(f)),,$(f)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) generic-y   := $(addprefix $(obj)/, $(generic-y))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) generated-y := $(addprefix $(obj)/, $(generated-y))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) # Remove stale wrappers when the corresponding files are removed from generic-y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) old-headers := $(wildcard $(obj)/*.h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) unwanted    := $(filter-out $(generic-y) $(generated-y),$(old-headers))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) quiet_cmd_wrap = WRAP    $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)       cmd_wrap = echo "\#include <asm-generic/$*.h>" > $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) quiet_cmd_remove = REMOVE  $(unwanted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)       cmd_remove = rm -f $(unwanted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) all: $(generic-y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	$(if $(unwanted),$(call cmd,remove))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	@:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) $(obj)/%.h:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	$(call cmd,wrap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) # Create output directory. Skip it if at least one old header exists
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) # since we know the output directory already exists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ifeq ($(old-headers),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) $(shell mkdir -p $(obj))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .PHONY: $(PHONY)